Here’s a link to an external medical journal you may find interesting. Please note that it will require you to register with the website in order to read the full article.

https://www.readbyqxmd.com/read/23916860/ring-chromosome-20-a-pediatric-potassium-channelopathy-responsive-to-treatment-with-ezogabine

The article details a case of treating a R20 patient with the drug ezogabine.